Melodeon Making 2007

The traditional accordion of choice where I live is the melodeon, a diatonic button accordion which I believe is unisonoric too. I'm not sure because I've never actually played one.

I've just learnt that there's going to be a melodeon making course in March. I was quite tempted by this as I would love to know more the insides of accordions. Unfortunately I don't really have the skills. One day maybe...

No, it's bisonoric -- different notes on the same button on push and pull, on both treble and bass. The one-row melodeon has treble that's very like a harmonica, as the other poster suggests.

There's lots of stuff about melodeons, including keyboard layouts (which do vary quite considerably), at http://www.melodeon.net . Which is one of John Spiers' sites, though he no longer posts himself.